<template>
  <div class="permission-container">
    <div class="app-container">
      <!-- 表格 -->
      <el-card>
        <div style="text-align: right; margin-bottom: 20px">
          <el-button type="primary" size="small" @click="hAdd(1,'0')">添加权限</el-button>
        </div>
        <el-table border :data="list" row-key="id">
          <el-table-column label="名称" prop="name" />
          <el-table-column label="标识" prop="code" />
          <el-table-column label="描述" prop="description" />
          <el-table-column label="操作">
            <template #default="{row}">
              <el-button v-if="row.type===1" type="text" @click="hAdd(2,row.id)">添加</el-button>
              <el-button type="text" @click="hEdit(row)">编辑</el-button>
              <el-button type="text" @click="doDel(row.id)">删除</el-button>
            </template>
          </el-table-column>
        </el-table>
      </el-card>
      <el-dialog
        title="新增权限"
        :visible.sync="showDialog"
        :close-on-click-modal="false"
        :close-on-press-escape="false"
        @close="resetForm"
      >

        <!-- 表单内容 -->
        <el-form ref="formData" label-width="100px" :model="formData" :rules="rules">
          <el-form-item label="权限名称" prop="name">
            <el-input v-model="formData.name" />
          </el-form-item>
          <el-form-item label="权限标识" prop="code">
            <el-input v-model="formData.code" />
          </el-form-item>
          <el-form-item label="权限描述">
            <el-input v-model="formData.description" />
          </el-form-item>
          <el-form-item label="权限启用">
            <el-switch
              v-model="formData.enVisible"
              active-text="启用"
              active-value="1"
              inactive-text="不启用"
              inactive-value="0"
            />
          </el-form-item>
        </el-form>

        <template #footer>
          <div style="text-align: right;">
            <el-button @click="showDialog = false">取消</el-button>
            <el-button type="primary" @click="doSubmit">确定</el-button>
          </div>
        </template>
      </el-dialog>
    </div>
  </div>
</template>
<script>
import { getPermissionList, addPermission, delPermission, updatePermission } from '@/api/permisson'
import { tranDataToTree } from '@/utils'

export default {
  name: 'Permissions',
  data() {
    const validCode = (rule, value, callback) => {
      let codeList = this.arr.map(item => item.code)
      if (this.isEdit) {
        codeList = this.arr.filter(item => item.id !== this.formData.id).map(item => item.code)
        // console.log(codeList)
      }
      if (codeList.includes(value)) {
        callback(new Error(value + '已被占用'))
      } else {
        callback()
      }
    }
    const validName = (rule, value, callback) => {
      let nameList = this.arr.filter(item => item.pid === this.formData.pid).map(item => item.name.trim())
      if (this.isEdit) {
        nameList = this.arr.filter(item => item.id !== this.formData.id && item.pid === this.formData.pid).map(item => item.name.trim())
        // console.log(nameList)
      }
      if (nameList.includes(value)) {
        callback(new Error(value + '已被占用'))
      } else {
        callback()
      }
    }
    return {
      isEdit: false,
      list: [],
      showDialog: false, // 是否显示弹层
      formData: {
        name: '', // 名称
        code: '', // 权限标识
        description: '', // 描述
        enVisible: '0', // 开启
        pid: '', // 添加到哪个节点下
        type: '' // 类型
      },
      rules: {
        code: [
          { message: '不能为空', required: true, trigger: 'blur' },
          { validator: validCode, trigger: 'blur' }
        ],
        name: [
          { message: '不能为空', required: true, trigger: 'blur' },
          { validator: validName, trigger: 'blur' }
        ]

      }
    }
  },
  created() {
    this.loadPermissionList()
  },
  methods: {
    // 删除权限
    async doDel(id) {
      this.$confirm('确定删除此权限?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(async() => {
        await delPermission(id)
        // 重新渲染
        this.loadPermissionList()
      }).catch((res) => {
        console.log(res)
      })
    },

    // 重置表单
    resetForm() {
      this.$refs.formData.resetFields()
      this.formData = {
        name: '', // 名称
        code: '', // 权限标识
        description: '', // 描述
        enVisible: '0', // 开启
        pid: '', // 添加到哪个节点下
        type: '' // 类型
      }
    },
    hAdd(type, pid) {
      this.isEdit = false
      this.showDialog = true
      this.formData.type = type
      this.formData.pid = pid
    },
    hEdit(data) {
      this.isEdit = true
      this.showDialog = true
      this.formData = { ...data }
    },
    async doEdit() {
      try {
        await updatePermission(this.formData)
        // 重新渲染,关闭弹窗
        this.loadPermissionList()
        this.showDialog = false
        // 保存数据
      } catch (err) {
        console.log('updatePermission', err)
      }
    },
    async doAdd() {
      try {
        await addPermission(this.formData)
        // 重新渲染,关闭弹窗
        this.loadPermissionList()
        this.showDialog = false
      } catch (err) {
        console.log('addPermission', err)
      }
    },
    doSubmit() {
      // 兜底校验
      this.$refs.formData.validate(valid => {
        if (!valid) return
        this.isEdit ? this.doEdit() : this.doAdd()
      })
    },
    // 获取权限列表
    async loadPermissionList() {
      try {
        const { data: res } = await getPermissionList()
        // console.log('getPermissionList', res)
        // 保存数据
        this.list = tranDataToTree(res.data)
        this.arr = res.data
      } catch (err) {
        console.log('getPermissionList', err)
      }
    }
  }
}
</script>
